Create an Embedded Developer Diagnostics Panel and Testing Application #1

Create an interactive developer diagnostics panel that is distributed as part of the watchtower library and can be enabled in consumer applications for development, testing, and troubleshooting purposes.

The panel should provide a significantly improved developer experience compared to relying on browser console logs by offering real-time visibility into telemetry events and runtime logs through an interactive UI.

The feature should be hidden behind a feature flag and accessible through a configurable keyboard shortcut, ensuring it is available only when explicitly enabled by developers and remains invisible to normal application users.